Gaseous fuel



30 softening the same.

UNITED STATES PATENT OFFICE.

JAMEs-n. ROSE, ornnenwon'rii, PENNSYLVANIA, AND JOHN HARRIS, orLAKEWOOD,

OHIO, ASSIGNORS TO (JARED-OXYGEN COMPANY, OF PITTSBURGH, PENNSYLVANIA,

A CORPORATION OF DELAWARE.

GASEOUS FUEL.

1,404,232. No Drawing.

To all whom. it may concern:

Be it known that we, (1) JAMES R.-Rosn and (2) JOHN HARRIs, citizensofthe United States, residing at (1) Edgeworth, (2) Lake- 5 wood, in thecounty of (1) Allegheny, 2)

Cuyahoga, and State of (1) Pennsylvania, (2) Ohio, have inventeda-certain new and useful Improvement in Gaseous Fuel, of which" the.following is a full, clear, and

exact description.

This invention relates to gaseous fuel, and

particularly to fuels for the cutting and welding of metal wherein acombustible base of hydrogen is employed together with an other gas orgases capable of producing Within the blow pipe flame, a luminous conewhereby the application of the flame to the work is facilitated.

It has been proposed to mix with hy- -drogen gases such as illuminatinggas and carbon monoxide, the mixture being particu-. larly well suitedfor certain kinds'of work. It is the purpose of this invention toproduce a gas employing hydrogen as a combustible base which shall beparticularly useful for the cutting of alloys, cast steel, corroded,dirty and slaggy iron and steel, as well as cast iron; also for heatinglarge masses or bodies of metal for the purpose of For "this purpose we"employ a mixture of butane and propane with hydrogenin proportions offrom 23 -70 to 12. by volume each of such butane and propane to thehydrogen constituent.

tent in the mixture is obtaine thereby producin a flame, the volume andheat units of which will be increased over the volume and heat unitsproduced by the combustion 40 of hydrogen alonewith oxygen, to theextent to which the butane and propane are'present in the mixture. andpropane in the mixture enables the metal to be pre-heated quickly and,in the Calculations, published in 1908, the

Bv'. 35 the nse of this mixture, a hi h carbon con- Thepresence of thebutane Specification of Letters Patent. Pate t d J 24 1922.

Application filed December 26, 1919.

Serial No. 347,459.

case of large masses or bodies of such. metal, with sufficient rapidityto more than offset the loss of heat through conduction and radiation.'Thisrendeis the fuel particularly useful for the cutting and heating ofsuch heavy masses of metal, as well as for set forth hereinbefore.

According to Richards on Metallmkgical amc temperature produced by thecombustion of the aforesaid gases will exceed 3200- C., and thevariatlons 1n the percentage of the said gases will cause the followingvariations in the net B. T. U. per cubic foot of mixture and in thecubic feet of oxygen required for Ehe combustion of a cubic foot of suchmixure:

No. 1 mixture, 95% H. with 22 each of butane and propane; net B. T. U.s421; cu. ft. of oxygen .713.

No. 2 mixture, 75% H. with 12-1 70 each of butane and propane; net B. T.U.s 932; cu.

gases to the hydrogen, the butane and pro- I pane being present in theproportions of at least 2% each in such mixture.

In testimony whereof, we hereunto affix our signatures.

JAMES R. ROSE. JOHN HARRIS.

a n cutting the special metals of the character

